ntfy/docs/static/css/extra.css

figure img {
    border-radius: 7px;
    filter: drop-shadow(3px 3px 5px #ccc);
}

.remove-md-box {
    background: none;
    border: none;
    margin: 0 auto;
}

.remove-md-box td {
    padding: 0 10px
}